參數資料
型號: 7534
廠商: Renesas Technology Corp.
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機
文件頁數: 49/55頁
文件大?。?/td> 610K
代理商: 7534
7534 Group
Rev.2.00 Jun 21, 2004 page 49 of 54
REJ03B0099-0200Z
Fig. 52 Handling of V
CC
, USBV
REFOUT
pins of M37534M4-XXXGP
Outline 32P6U-A
P0
7
P1
0
/R
X
D/D-
P1
1
/T
X
D/D+
P1
2
/S
CLK
P1
3
/S
DATA
P1
4
/CNTR
0
P2
0
/
AN
0
P2
1
/
AN
1
32
31
30
29
28
27
26
25
P3
4
(LED
4
)
P3
3
(LED
3
)
P3
2
(LED
2
)
P3
1
(LED
1
)
P3
0
(LED
0
)
V
SS
X
OUT
X
IN
9
10
11
12
13
14
15
16
2
8
7
6
5
3
1
4
V
C
C
S
R
P
2
/
2
5
6
2
1
1
1
2
2
P
2
P
4
P
3
P
2
2
P
1
P
0
U
R
M37534M4-XXXGP
P
3
/
3
P
4
/
4
P
5
/
5
V
R
1.5k
Reason of
is to reduce the effect by switcing noise of microcomputer to the
analog circuit generating USBV
REFOUT
output. Use the bigger capacitor and
connect to device at the shortest distance.
Reason of
is to prevent the instability of the USBV
REFOUT
output due to
external noise.
Connect a capacitor to a device as
close as possible. For the capacitor,
a ceramic capacitor or an electrolytic
capacitor of 0.22
μ
F is recommended.
Connect a bypass capacitor to a device
as close as possible. For the capacitor,
a ceramic capacitor or an electrolytic
capacitor of 1.0
μ
F is recommended.
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